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CVE-2009-1133

37
FAUCET Score

CVE-2009-1133 is a critical heap-based buffer overflow vulnerability affecting Microsoft Remote Desktop Connection (RDP 5.0-6.1) on various Windows operating systems and Remote Desktop Connection Client for Mac 2.0. This flaw allows unauthenticated remote attackers to execute arbitrary code with high impact on confidentiality, integrity, and availability. While it has a high CVSS score of 9.3 and a FAUCET Risk Score of 98/100, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:-:sp4:*:*:*:*:*:*
2003CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server:2003:sp2:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2008:*:*:itanium:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2008:*:*:x64:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
30.50%
Probability of exploitation in next 30 days
EPSS Percentile
98.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.3050 is in the 93rd percentile among its peer group of 8,920 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.microsoft.com / en-us/security-updates/securitybulletins/2009/ms09-044
secunia.com / advisories/36229
Vendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5693
securitytracker.com / id
us-cert.gov / cas/techalerts/TA09-223A.html
US Government Resource
vupen.com / english/advisories/2009/2238
PatchVendor Advisory